Vibur DBCP is a concurrent, fast, and fully-featured JDBC connection pool based on Java dynamic proxies. It supports a fairness parameter, statement caching, Hibernate integration, and SQL queries logging, among other features. Various configuration examples (with Spring, Hibernate, etc.) are provided.
StelsCSV is a JDBC driver that allows performing SQL statements and other JDBC operations upon text files (comma separated, tab-separated, fixed length, etc.). Using this driver, users can easily create a simple database consisting of plain text files. The driver can be used for writing data importing programs and migration tools. It supports most keywords of ANSI SQL92, table joins, INSERT, UPDATE, and DELETE statements, data types, aggregate, converting, string, and user-defined SQL functions.
SpiderDB is a lightweight database schema crawler library developed using Java. It is a simple library that can be used to Crawler the underlying schema of a database and return POJO objects, which makes it very easy to use. This library takes care of all the differences among the various database management systems, and makes application code free from the DBMS differences.You keep using same POJOs even if you change the underlying DBMS.
BoneCP is a Java JDBC connection pool implementation that is tuned for high performance by minimizing lock contention to give greater throughput for your applications. It currently beats all known connection pools, including C3P0 and DBCP, as shown on the benchmark section on the site.
StelsXML is a JDBC type 4 driver that allows you to perform SQL queries and other JDBC operations on XML files. It allows you to easily access data contained in XML documents using the standard SQL syntax and XPath expressions. The driver is completely platform-independent. It supports most keywords of ANSI SQL'92, XPath expressions for defining tables and columns, inner and outer table joins, aggregate, numeric, string, conversion, and user-defined SQL functions.
BitNami JRubyStack provides a fast, easy way to develop and deploy Ruby on Rails applications on a Java runtime using JRuby. It includes JRuby, Rails, Java, Tomcat, the GlassFish gem, MySQL, and Subversion. It supports Windows, Linux, and Mac OS X, so you can share the same Rails environment on multiple platforms.